Compare 5/80 and 9/81
5/80 is smaller than 9/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 81 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 80 × 81 = 6480,
5/80 = 5 × 81/80 × 81 = 405/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
9/81 = 9 × 80/81 × 80 = 720/6480 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/6480 < 720/6480 or 5/80 < 9/81
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